Search Results for author: Zhijun Zeng

Found 5 papers, 0 papers with code

Weak Collocation Regression for Inferring Stochastic Dynamics with Lévy Noise

no code implementations13 Mar 2024 Liya Guo, Liwei Lu, Zhijun Zeng, Pipi Hu, Yi Zhu

In this work, we propose a Weak Collocation Regression (WCR) to explicitly reveal unknown stochastic dynamical systems, i. e., the Stochastic Differential Equation (SDE) with both $\alpha$-stable L\'{e}vy noise and Gaussian noise, from discrete aggregate data.

regression

Neural Born Series Operator for Biomedical Ultrasound Computed Tomography

no code implementations25 Dec 2023 Zhijun Zeng, Yihang Zheng, Youjia Zheng, Yubing Li, Zuoqiang Shi, He Sun

Ultrasound Computed Tomography (USCT) provides a radiation-free option for high-resolution clinical imaging.

Image Reconstruction

Reconstruction of dynamical systems from data without time labels

no code implementations7 Dec 2023 Zhijun Zeng, Pipi Hu, Chenglong Bao, Yi Zhu, Zuoqiang Shi

In this paper, we study the method to reconstruct dynamical systems from data without time labels.

Weak Collocation Regression method: fast reveal hidden stochastic dynamics from high-dimensional aggregate data

no code implementations6 Sep 2022 Liwei Lu, Zhijun Zeng, Yan Jiang, Yi Zhu, Pipi Hu

Taking the collocations of Gaussian functions as the test functions in the weak form of the FP equation, we transfer the derivatives to the Gaussian functions and thus approximate the weak form by the expectational sum of the data.

regression

A Deep Learning Approach to Predicting Ventilator Parameters for Mechanically Ventilated Septic Patients

no code implementations21 Feb 2022 Zhijun Zeng, Zhen Hou, Ting Li, Lei Deng, Jianguo Hou, Xinran Huang, Jun Li, Meirou Sun, Yunhan Wang, Qiyu Wu, Wenhao Zheng, Hua Jiang, Qi Wang

We develop a deep learning approach to predicting a set of ventilator parameters for a mechanically ventilated septic patient using a long and short term memory (LSTM) recurrent neural network (RNN) model.

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